Depending on what the subject was I'm either the partner you could ever have or a completely lazy piece of crap.

The WORST people to work with were the ones who automatically assumed you were a lazy piece of crap right from the start, never communicated with you at all, and tried to do it all themselves because they assumed, based on how you look or act, that you wouldn't or couldn't, do anything yourself

On the course you're thinking about everything that's going on. What kind of shot do I hit? Should I really be trying to carry that hazard? I hope the guy that just hit a flawless approach isn't watching me right now. Shit, I better completely reevaluate my grip right this second.

I like to imagine this stuff when i'm at the range so i'm used to it when i'm playing.

I'll pretend there's a sand trap just to the right of the flag on the range, so i'll hit my shot like i'm trying to avoid it, or pretend the flag is behind a dogleg right/left and hit my shot assuming that.

I'll only hit straight at the flag for the first 1/4 of my bucket at the range

I've just started doing this at the end of last summer, but it seems to help me be more calm on the course while still thinking about what i'm going to do.

Of course, thinking about your basic swing mechanics is a big no-no while playing. But you gotta be able to think about shot shaping without getting nervous.